Concentration control of volatile organic compounds by ionic liquid absorption and desorption

doi:10.1016/j.cjche.2018.12.019

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (10): 2383-2389.DOI: 10.1016/j.cjche.2018.12.019

• Separation Science and Engineering • 上一篇下一篇

Concentration control of volatile organic compounds by ionic liquid absorption and desorption

Xiaobin Ma¹, Minyan Wu¹, Shuo Liu², Jinxing Huang², Bin Sun¹, Ying Zhou¹, Qiulian Zhu¹, Hanfeng Lu¹

1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2 Hangzhou Runxin Technology Co. Ltd., Hangzhou 310014, China

收稿日期:2018-11-26 修回日期:2018-12-24 出版日期:2019-10-28 发布日期:2020-01-17
通讯作者: Hanfeng Lu
基金资助:
Supported by the Zhejiang University Students Science and Technology Innovation Activity Plan Funding (No. 2018R403078).

Concentration control of volatile organic compounds by ionic liquid absorption and desorption

Xiaobin Ma¹, Minyan Wu¹, Shuo Liu², Jinxing Huang², Bin Sun¹, Ying Zhou¹, Qiulian Zhu¹, Hanfeng Lu¹

1 Institute of Catalytic Reaction Engineering, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2 Hangzhou Runxin Technology Co. Ltd., Hangzhou 310014, China

Received:2018-11-26 Revised:2018-12-24 Online:2019-10-28 Published:2020-01-17
Contact: Hanfeng Lu
Supported by:
Supported by the Zhejiang University Students Science and Technology Innovation Activity Plan Funding (No. 2018R403078).

摘要/Abstract

摘要： Volatile organic compounds (VOCs) are difficult to be eliminated safely and effectively because of their large concentration fluctuations. Thus, maintaining a stable concentration of VOCs is a significant study. In this research, H₂O, Tween-80,[Emim]BF₄,[Emim]PF₆, and[Hnmp]HSO₄ were applied to absorb and desorb simulated VOCs. The ionic liquid[Emim]BF₄ demonstrated the best performance and was thus selected for further experiments. As the ionic liquid acted as a buffer, the toluene concentration with a fluctuation of 2000-20000 mg·m^-3 was stabilized at 6000-12000 mg·m^-3. Heating distillation (90℃) was highly efficient to recover[Emim]BF₄ from toluene. The regenerated[Emim]BF₄ could retain its initial absorption capacity even after multiple cycles. Moreover,[Emim]BF₄ had the same buffer function on various aromatic hydrocarbons.

关键词: Volatile organic compounds, Concentration fluctuation, Absorb and desorb, Ionic liquid, Buffer

Abstract: Volatile organic compounds (VOCs) are difficult to be eliminated safely and effectively because of their large concentration fluctuations. Thus, maintaining a stable concentration of VOCs is a significant study. In this research, H₂O, Tween-80,[Emim]BF₄,[Emim]PF₆, and[Hnmp]HSO₄ were applied to absorb and desorb simulated VOCs. The ionic liquid[Emim]BF₄ demonstrated the best performance and was thus selected for further experiments. As the ionic liquid acted as a buffer, the toluene concentration with a fluctuation of 2000-20000 mg·m^-3 was stabilized at 6000-12000 mg·m^-3. Heating distillation (90℃) was highly efficient to recover[Emim]BF₄ from toluene. The regenerated[Emim]BF₄ could retain its initial absorption capacity even after multiple cycles. Moreover,[Emim]BF₄ had the same buffer function on various aromatic hydrocarbons.

Key words: Volatile organic compounds, Concentration fluctuation, Absorb and desorb, Ionic liquid, Buffer

Xiaobin Ma, Minyan Wu, Shuo Liu, Jinxing Huang, Bin Sun, Ying Zhou, Qiulian Zhu, Hanfeng Lu. Concentration control of volatile organic compounds by ionic liquid absorption and desorption[J]. 中国化学工程学报, 2019, 27(10): 2383-2389.

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Concentration control of volatile organic compounds by ionic liquid absorption and desorption

Concentration control of volatile organic compounds by ionic liquid absorption and desorption

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